Oscillatory motor for electric safety razors



Dec. 1, 1931. s w, MOON 1,834,103

OSCILLATORY MOTOR FOR ELECTRIC SAFETY RAZORS Filed Nov. 18. 1929 INVENTOR.

Patented Dec. 1,1931..

,- UNITED STATES, PATENT OFFICE SAMPSON w. moon, or omoaeo,

rumors, ASSIGNOR 'ro WILLIAM a. cannon, or

cnrcaeo, rumors I OSCILLATURY ROTOR FOR ELECTRIC SAFETY RAZORS Application filed November is, 1929; Serial No. 407,83 6.

My present inyention relates broadly to a vibratory apparatus and more particularly to a razor of the safety type that is operated through the medium of a'vibrating armature.

other, and the assembly of these parts is such a that water ormoisture is prevented fromentering the handle and causing damage to the operating mechanism or short-circuiting the electrical elements.

My invention has numerousobj ects in view among which may be mentioned the provision of an electrically operated safety razor that is compact in construction; is novel in the arran'gementof its parts is dependable in operation, and is durable in construction. 1* ur- I .ther objects will be apparent after an understanding ofmy invention is had, and I prefer to accomplish said objects, and to carry out my invention, in substantially the'manner hereinafterfully described and as'more particularly pointed out in the claims. Refer ence will now be made to the accompanying drawings that form apart of this specification.

Inthe drawings Figure 1 is'a vertical longitudinal section of my improved safety razor, the view being taken axiallytherethrough.

, Figure 2 1s a vertical side elevation of the structure shown ii /Figure 1 showing the assembly with the handle or grip in section.

The drawings it will be understood are somewhat schematic for the purpose of illustrating a typical or preferred form in which my invention may be made, andin said drawactcrs to designate like ings I have employed similar reference-char parts wherever they appear throughout the views.

which anarmature bar 17 extends.

. posed between the The structure shown consists of an electromagnet core 10-formingthe-body of a spool upon which-there is an energizing winding 11 that has electrical connection at one end with core 10 in the usual manner, and the upper and lower ends of the spool are pro- Vided with retaining flanges 12 and 13 respectively. The upper or outer end of the core' terminates in a head or pole 14 that is secured to the core by a screw, or in any other suitable manner. A pole piece 15,

formed in a substantially L-shaped bracket, issecured tothe lower end of the core, one

"arm of the pole piece or bracket being disposed along one side of the coil in the manner shown to'support-a fiat spring 16 frjpm he spring l6is of magnetic material so that when the current is passingthroughthe coil the armature bar will be attracted towards the upper pole piece 14 and the tension of the spring will pull the armature bar away from the pole piece causing vibratory move- ,7

ment of the armature and impacts upon the upper end of the structure resulting in a vibration of the handle in which the structure 'is removably mounted.

A yoke 18, of substantially U-shape and disposed with its parallel arms horizontal, has one of its parallel arms secured to the pole piece 14. This yoke is made of nonmagnetic material, and the portion that connects the arms aii'ords an abutment against which a hammer 19 on the end of the armature will strike when the armature is vibrated. In order to cushion the impact of i the hammer against the-abutment a butler or cushion 20 of rubber or the like is inter- I abutment and the hammer, and is preferably mounted in a socket in the latter. As will be seen the arms of the abutment yoke provide a, space which accommodates the hammer 19 and thereby reduces the transverse dimensions of the structure.

The lower pole piece 15 has .a pair of innerpand outer contact springs 22 and 23 mounted upon the upright arm thereof and said springs are insulated from the latter ceive a tool-head or and from each other by pieces of insulating material 24.

The inner spring has its upper end pressing against the armature bar 17 about midway the length of the coil and it is insulated from said bar by an insulation block 25. This spring engages the outer spring through a contact block or point 26 when the armature bar is in a retracted position and when the armature is. attracted, the springs electrically disengage and the electro-magnetic energizing and actuating circuit opens.

The coil and the L-shaped pole piece 15 are secured to a base 27 of insulating material and a pair of terminal rods 28 and 29,

of irregular shape extend through the base,

the terminal 28 being connected by the wire or conductor,30 to one end of the energizing winding 11 and the terminal 29 being connected by a conductor or wire 40 to the lower end of the outer spring 23. The terminals 28 and 29 pass out of the lower end of the base 27 in spaced parallel relation to each other so as to receive the socket contact elements on the end of an electric cord leading from a suitable source of current. The current passes intermittently through the make-and-break elements 26 on the ends of arms or springs 2223 and the spring 16 on armature bar 17 assists in creating the vibratory motion of the bar and vibrates the handle.-

The structure hereinbefore described it will be seen is practically a unit and inorder to mount the same within a suitable handle I provide a plug 31 to which the upper horizontal arm of the abutment yoke 18 is connected by a screw 32. Imbeddedin the upper or outer portion of the plug is a tool-post 33 of any suitable. design to re-' blade-holder that may be removably attached thereto. The head or blade holder that is more particularly adapted for use with the present structure is preferably of the type disclosed in the copending application of Arthur A. Grothe for patent for a fsafety razor, filed November 18,1929, Serial No. 407,830. The plug 31 is screwthreaded and .is adapted to be inserted andfscrewed into the upper end of a tubularv grip or handle 34 and after it has been screwed in the desired distance aconeshaped cap 35 is mounted upon the plug in the manner shown in Figure'2.

A plug 36 is screwed into the opposite end of the handle or grip and has an aperture 37 inorder to accommodate the terminals 28 and 29. When the parts are being assembled in the handle or grip the plugs are screwed towards each other until the base 27 abuts the lower plug 36.

What I claim is 1. A device of the character disclosed comf prising a tubular handle, an electromagnet is connected, an abutment member interposed between said electromagnet and said plug and connected thereto, a vibratory armature actuated by said electromagnet to impact said abutment member and thereby vibrate said handle, a tool post mounted on said plug outside the handle and independent of the structure within said handle whereby it is caused tovibrate with said handle, and means closing the opposite end of said handle.

2. A deviceof the character disclosed comprising a tubular handle, an electromagnet therein, a plug removably secured in one end of said handle to which said electromagnet is connected, a base to which the opposite end of said electromagnet is connected, an abutment member interposed between said electromagnet and said plug and connected thereto, a vibratory armature actuated by said electromagnet to impact said abutment member and thereby vibrate said handle, a tool post mounted on said plug outside the handle and independent of the structure within said handle whereby it is caused to vibrate with said handle, and a plug in the opposite end of said handle with which said base is engaged.

3. A device of the character disclosed comprising a tubular handle, a removable plug closing an end of said handle, an abutment member secured to said plug and extending to impact said abutment member and thereby vibrate said handle, a tool-post mounted on said plug outside said handle and independent of the structure therein, whereby it is caused to vibrate with said handle, and closure means for the opposite end of said handle and engaged with the adjacent portion of said coreto anchor the interior elements in position.

4:. A device of the character disclosed comprising a tubular handle, a removable plug closing an end of said handle, anabutment member secured to said plug and extending into said handle, an electromagnet core secured to and depending from said abutment member and provided with an energizing winding, a base to which the opposite end of said core is connected, a vibratory armature anchored adjacent theopposite. end of said coreand actuated thereby to impact said abutment member and thereby vibrate said handle, a tool-post mounted on said plug outside said handle and independent of the structure therein, whereby it is caused to vibrate bysaid handle, and a plug in the opposite end of said handle with which said closing an end of said handle,

caused to vibrate when base is engaged to anchor the interior elements in position.

5. A device of the character disclosed comprising a tubular handle, a removable plug an abutment member secured to said plug within the handle, an electromagnet core secured to and extending from said member and havingan energizing winding, a tool-post extending from the portion of said plug outside said handle and mounted independent of said' abutment member and core whereby it is said handle is vibrated, abase to which the opposite end of said core is connected, a vibratory armature anchored adjacent said base and core and actuated by the latter to impact said abutment member and thereby vibrate saidhandle, terminals extending through opposite sides of said base and having electrical connection with said core and winding; the above-mentioned elements being assembled in a unitary structure for ready insertion in and removal from said handle; and a stopplug in the lower end of said handle that is engaged by said base. a

6. A device of the kind described comprising a hollow tubular grip, an abutment member adjacent one end of said grip, an electromagnet core connected to said abutment and having an energizing coil, a vibratory armature ba'r extending alongside said coil and having its free end positioned adjacent said abutment,a head on said bar adapted to impact said abutment when saidbar is vibrated radially with respectto said coil, 4

make-and brake devices associated with said armature, circuit terminals having electrical connections with said coil and said makeand-break devices, and a tool post on said g 7 A device of the kind described comprising a hollow grip, plugs closing the upper and lower ends thereof, an abutment member secured to the upper plug, anchored on said upper plug and extending out of said grip, an electromagnet core having an energizing coil, said core being anchored to the lower plug and connected at its opposite end to said abutment, an \L- shaped bracket having its lateral arm anchored on the lower plug and having its longer arm extending upwardly alongside said coil, an armature bar yieldingly carried by said bracket and movable towards and away with respect to the core, make-and-break devices carried by said bracket and coacting with said armature, and circuit terminals ex tended through said lower plug and having electrical connections with said coil and said make-and-break devices.

Signed at'Chicago, Cook County,'Illinois,

the 9th day of October, 1929, SAMPSON w. Moon.

a tool post from said coil in a plane that is radial 

